..Whereas strict phototrophs were scarce, we identified a variety of likely mixotrophic taxa, which supports the idea that mixotrophy may be important for the survival of diverse protists through the long polar night...

Horizontal gene transfer of a chloroplast DnaJ-Fer protein to Thaumarchaeota and the evolutionary history of the DnaK chaperone system in Archaea

..The maintenance of highly diverse natural microbialites in laboratory aquaria holds promise to study the role of different metabolisms in the formation of these structures under controlled conditions...

Accuracy of protist diversity assessments: morphology compared with cloning and direct pyrosequencing of 18S rRNA genes and ITS regions using the conspicuous tintinnid ciliates as a case study

..The Marmara sediment clustered with the soil metagenome, highlighting the common ecological role of both types of microbial communities in the degradation of organic matter and the completion of biogeochemical cycles...

The extent of protist diversity: insights from molecular ecology of freshwater eukaryotes

..The presence of several sequences of freshwater haptophytes scattered among marine taxa in phylogenetic trees confirms the occurrence of several independent haptophyte transitions between marine and freshwater environments...

..Nonetheless, our results suggest that combined SSU+LSU rDNA phylogenies can help to resolve several ambiguous regions of the eukaryotic tree and identify key taxa for subsequent multi-gene analyses...

..This has not only implications for archaeal physiology but also opens the possibility for the presence of ACP-independent FA synthesis in the cenancestor, which may have been endowed with FA-phospholipid membranes...

Bacterial diversity in hydrothermal sediment and epsilonproteobacterial dominance in experimental microcolonizers at the Mid-Atlantic Ridge

..The passage from "picobiliphytes" to "picozoa" illustrates the crucial role that classical protistology should play to provide sound biological context for the wealth of data produced by modern molecular techniques. ..

..This is exemplified by the fact that, in archaea, the complex evolutionary history of the DHS is not paralleled by that of the IF-5A, indicating that these proteins do not follow a perfect co-evolution...

..Taking advantage of the recent completion of the Fusobacterium nucleatum genome sequence we have examined the evolutionary relationships of Fusobacterium genes by phylogenetic analysis and comparative genomics tools...

..Few of the genes studied show evidence for transfer. The phylogeny based on the genes devoid of transfer is very consistent with the ribosomal RNA tree, suggesting that an eubacterial phylogeny does exist...

The nucleolar proteome and the (endosymbiotic) origin of the nucleus

David MoreiraBioessays 26:1144-5; author reply 1145-7. 2004

Macrofilamentous microbial communities in the metal-rich and acidic River Tinto, Spain

..coli. Phylogenetic analysis showed that 9 orf out of 20 were related to sequences from members of the Acidobacteria, supporting the hypothesis that the analysed insert might be originated from an organism related to this phylum...

Phytoplankton diversity and cyanobacterial dominance in a hypereutrophic shallow lake with biologically produced alkaline pH